Faculty Profiles - ICHINO, Ryoichi

Papers - ICHINO, Ryoichi

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Recovery of rare-earth elements from neodymium magnets using molten salt electrolysis Reviewed International journal

Kamimoto Y., Itoh T., Kuroda K., Ichino R.

JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT Vol. 19 ( 3 ) page： 1017 - 1021 2017.7

Phosphorus removal and magnetic separation using magnetic schwertmannite Reviewed International coauthorship International journal

Kamimoto Yuki, Yamauchi Kazushige, Hagio Takeshi, Ichino Ryoichi, Min Kyung Sok, Kwon Koo Ho, Kim Ye Jin, Jung Yong Jun

DESALINATION AND WATER TREATMENT Vol. 63 page： 463 - 468 2017

Removal properties of phosphate with Ettringite Reviewed International coauthorship International journal

Kamimoto Yuki, Onda Keita, Ichino Ryoichi, Min Kyung-Sok, Kwon Koo-Ho, Jung Yong-Jun

DESALINATION AND WATER TREATMENT Vol. 63 page： 478 - 482 2017

Ti<inf>3</inf>AlC<inf>2</inf> MAX Phase: A surprising candidate material for highly selective and efficient gold recovery from strong acid solutions Reviewed International coauthorship International journal Open Access

Thaveemas P., Phouthavong V., Hagio T., Dechtrirat D., Chuenchom L., Nijpanich S., Chanlek N., Park J.H., Ichino R.

Separation and Purification Technology Vol. 343 2024.9

Magnetically separable TiO<inf>2</inf>/SnO<inf>2</inf>/Fe<inf>3</inf>O<inf>4</inf>-based nanocomposite photocatalyst for organic dye removal under low-power ultraviolet-visible light irradiation Reviewed International coauthorship

Juabrum S., Nijpanich S., Chanlek N., Kidkhunthod P., Poo-arporn Y., Nakajima H., Rujirawat S., Yimnirun R., Nanan S., Pinitsoontorn S., Praserthdam P., Phouthavong V., Park J.H., Hagio T., Ichino R.

Journal of Water Process Engineering Vol. 66 2024.9

Tribocatalytic Reaction Enabled by TiO<inf>2</inf> Nanoparticle for MoDTC-Derived Tribofilm Formation at ta-C/Steel Contact Reviewed International coauthorship Open Access

Matsukawa D., Park J.H., Lee W.Y., Tokoroyama T., Kim J.I., Ichino R., Umehara N.

Coatings Vol. 14 ( 6 ) 2024.6

Removal of heavy metals by BEA zeolite/Fe<inf>3</inf>O<inf>4</inf> composite prepared via dry-gel conversion method using agrowaste-derived raw material Reviewed International coauthorship

Phouthavong V., Hagio T., Park J.H., Nijpanich S., Duangkhai K., Rujiravanit R., Thaveemas P., Chounlamany V., Kong L., Li L., Ichino R.

Solid State Sciences Vol. 149 2024.3

Super hardening of Fe–W alloy plating by phase transformation of amorphous to metal carbides-dispersed nanocrystalline alloys and application as promising alternative for hard chromium plating Reviewed

Park J.H., Kim J.I., Shinohara Y., Hagio T., Umehara N., Ichino R.

Surface and Coatings Technology Vol. 477 2024.2

Potential of C-plane Aligned Hexagonal Tungsten Oxide Film as a Molecular Sieve-type Separation Membrane Reviewed International coauthorship International journal

Hagio Takeshi, Kunishi Hiroto, Wada Shintaro, Terao Toshihiro, Kinoshita Sora, Phouthavong Vanpaseuth, Nijpanich Supinya, Park Jae-Hyeok, Ichino Ryoichi

Vol. 41 ( 1 ) page： 9 - 19 2024.1

Authorship：Last author Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Association of Zeolite

Separation membranes are attracting increasing attention because they can contribute to realizing a carbon neutral and sustainable society through energy reduction of energy-consuming separation processes and through recycling of resources. Among numerous research elements on this topic, research on membrane materials is one topic of importance because it determines their separation characteristics. A group of inorganic crystals with molecular-sized micropores (microporous inorganic crystals), also called molecular sieves, are promising separation membrane material candidates. Among them, the authors have proposed hexagonal tungsten oxide as a potential molecular sieve-type membrane material. Because this material possesses uniaxial pores parallel to its crystallographic c-axis, c-plane oriented hexagonal tungsten oxide membrane is expected to function as a molecular sieve type-separation membrane; however, its application as a separation membrane material has not been considered. Here, we introduce our recent attempts on challenging to synthesize dense c-plane oriented hexagonal tungsten oxide film, and the experimental results seeking its possibility to apply as liquid/liquid and/or gas/gas separation membranes. The obtained membrane was confirmed to selectively separate water from a water/acetic acid mixture. Furthermore, results on the permeability of various liquids and gas molecules implied that the membrane functions as a molecular sieve-type separation membrane for small molecules through utilization of its micropores. This discovery is expected to contribute to expanding options for membrane materials.

DOI： 10.20731/zeoraito.41.1.9

CiNii Research

Facile Synthesis of Spherical Porous Tricobalt Tetroxide and Metal Cobalt for High Quality Cobalt Production and Recycling Reviewed International coauthorship Open Access

Matsunaga Shohei, Suzuki Takahiro, Hagio Takeshi, Park Jae-Hyeok, Kamimoto Yuki, Ichino Ryoichi, Takeshita Kyohei, Sato Fumiatsu, Sasaya Kazuo, Iguchi Takahisa, Tsunekawa Minoru

MATERIALS TRANSACTIONS Vol. 64 ( 12 ) page： 2739 - 2747 2023.12

Language：English Publishing type：Research paper (scientific journal) Publisher：The Japan Institute of Metals and Materials

<p>Liquid-phase synthesis is suitable for controlling the morphological and structural properties of functional inorganic materials and such control is important because they strongly affect the functionality of the product. Cobalt-based materials is one group of materials that requires control of powder morphology and structure. Cobalt is an important metal element used in various industrial fields such as secondary batteries, superalloys, permanent magnets, hard metals, and catalysts. The ever-growing demand of cobalt highlights that there is an urgent necessity to develop high quality material synthesis methods and to secure cobalt resources for countries that rely on import like Japan. Especially, technologies to recycle cobalt in a form reusable for secondary batteries and catalysts are desired because further increase in demand is anticipated. Meanwhile, spherical porous tricobalt tetroxide secondary particles obtained by calcination of spherical cobalt carbonate precursors have been reported to be promising materials for battery applications. Moreover, porous metal cobalt obtained by hydrogen reduction of tricobalt tetroxide is known to be effective for catalyst applications. However, conventional methods to synthesize spherical cobalt carbonate requires addition of additives in the reaction mixtures or otherwise requires hydrothermal treatment in pressure vessels. These are unfavorable to develop a practical and sustainable process for cobalt-based material production and recycling. In this study, a facile room temperature synthesis method to prepare spherical cobalt carbonate precursors from solutions of cobalt chloride and ammonium hydrogen carbonate that does not require any additives or hydrothermal treatment is developed by optimizing the carbonate solution concentration, carbonate/cobalt salt molar ratio, and stirring time during reaction. Furthermore, we succeeded in obtaining porous tricobalt tetroxide and porous metal cobalt that carry on the exterior spherical morphology of the original cobalt carbonate precursor by calcination and hydrogen reduction. The developed process shall contribute to realize high quality cobalt-based material production and recycling.</p>

DOI： 10.2320/matertrans.m-m2023809

Scopus

CiNii Research

AC Electromagnetic Field Controls the Biofilms on the Glass Surface by Escherichia coli & Staphylococcus epidermidis Inhibition Effect Reviewed International coauthorship Open Access

Aoyama N., Kanematsu H., Barry D.M., Miura H., Ogawa A., Kogo T., Kawai R., Hagio T., Hirai N., Kato T., Yoshitake M., Ichino R.

Materials Vol. 16 ( 21 ) 2023.11

Gas permeation properties of c-plane aligned hexagonal tungsten oxide membranes formed by multi-stage synthesis Reviewed International coauthorship International journal

Wada S., Hagio T., Kunishi H., Park J.H., Phouthavong V., Yamada Y., Terao T., Li X., Nijpanich S., Ichino R.

Journal of the Korean Ceramic Society Vol. 60 ( 6 ) page： 967 - 978 2023.11

Synthesis of Sulfur-Doped Magnetic Iron Oxides for Efficient Removal of Lead from Aqueous Solutions Reviewed International coauthorship Open Access

Xu J., Pan M., Zou C., Huang X., Hagio T., Ichino R., Kong L., Li L.

Water (Switzerland) Vol. 15 ( 20 ) 2023.10

Preparation and Characterization of TiO<inf>2</inf>-Coated Hollow Glass Beads for Functionalization of Deproteinized Natural Rubber Latex via UVA-Activated Photocatalytic Degradation Reviewed International coauthorship Open Access

Nijpanich S., Nimpaiboon A., Rojruthai P., Park J.H., Hagio T., Ichino R., Sakdapipanich J.

Polymers Vol. 15 ( 19 ) 2023.10

Room-Temperature Bulk Supramolecular Polymer Based on C<inf>3</inf>-Symmetrical Benzene-1,3,5-tricarboxamides Having Two-Armed Alkyl Groups as Side Chains Reviewed International journal

Ishigaki Y., Yamanaka M., Hagio T., Ichino R.

ChemistrySelect Vol. 8 ( 35 ) 2023.9

Utilization of agricultural waste to herbicide removal: Magnetic BEA zeolite adsorbents prepared by dry-gel conversion using rice husk ash–derived SiO<inf>2</inf> for paraquat removal Reviewed International coauthorship International journal Open Access

Phouthavong V., Hagio T., Park J.H., Nijpanich S., Srihirunthanon T., Chantanurak N., Duangkhai K., Rujiravanit R., Chounlamany V., Phomkeona K., Kong L., Li L., Ichino R.

Arabian Journal of Chemistry Vol. 16 ( 8 ) 2023.8

An effective strategy for improving the performance of electrodeposited Fe-W alloy plating: Tailoring microstructure by graphene incorporation Reviewed International coauthorship International journal Open Access

Shinohara Y., Park J.H., Hagio T., Kim J.I., Lee W.Y., Umehara N., Ichino R.

Materials and Design Vol. 230 2023.6

Improvement in the corrosion resistance of electrodeposited Ni-W alloy by MWCNT co-deposition and prevention of metal-carbon interfacial corrosion by carbide formation Reviewed

Park J.H., Hagio T., Ichino R.

Journal of Alloys and Compounds Vol. 939 2023.4

Preliminary Study on Electrodeposition of Copper Platings and Codeposition of Carbon Nanotubes from Organic Solvent Reviewed International journal Open Access

Park J.H., Fujita Y., Hagio T., Phouthavong V., Kamimoto Y., Bessho T., Ichino R.

Coatings Vol. 13 ( 4 ) 2023.4

Dry-gel conversion synthesis of magnetic BEA-type zeolites for antibiotics adsorption Reviewed International coauthorship

Phouthavong V., Hagio T., Nijpanich S., Park J.H., Hiraiwa M., Srihirunthanon T., Chantanurak N., Rujiravanit R., Kamimoto Y., Li X., Kong L., Li L., Ichino R.

Journal of Sol-Gel Science and Technology Vol. 105 ( 2 ) page： 511 - 524 2023.2

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Papers - ICHINO, Ryoichi